The engine that had stopped working was missing two intake valves, and the surviving cylinder had insufficient compression.
An overhaul would seem like the right approach, but it would be a lot of work and a lot of effort.
I decided to buy a used engine that looked to be in good condition and replace it.
I bought the EN07 for the Sambar, thinking that if it was a naturally aspirated engine, it would be compatible, as shown in the photo, but I didn’t do enough research beforehand.
The original engine was an EN07V, but this one was the successor model, the EN07F.
The EN07V’s intake system has a single injection nozzle called SPi, but this one has four injection nozzles called MPi.
This means the engine control computer is different, the harness is different, and maybe the cam profile is different too, which was a bit of a problem.
Well, there’s nothing to be done about it now that I’ve bought it.
The car had only about 55,000 km on the clock and was in good condition, so I thought that if I replaced the intake system, it might work, and decided to go ahead with the work.
Since the timing belt on the original engine had just been replaced, I thought it would be best to use that one, so I opened the timing belt cover of the engine I purchased, and lo and behold! It was so new that the alignment marks on the belt were still visible.
The water pump also seemed to be shiny. Is it new?
I was told it had done 55,000 km, so perhaps it was dismantled immediately after the belt was replaced.
The history of a used item really gets the imagination going. (^_^;)
This is the intake port of the EN07F.
It looks like the flow path area has increased.
This is the intake port of the EN07V.
The shape of the flow passage is round and gives an orthodox impression.
I tried fitting an EN07V gasket to the intake port of an EN07F.
The flow path shape is completely different.
Hmm, I wonder if it’ll be okay… (^_^;)
For now, I tried shaving off the parts where the gasket was in the way.
I hoped that the gasket would block the parts where the flow path was too large…
I installed the intake system.
So, what do you think?
In fact, the bolts used to attach the intake ports are all different and the thread lengths of the stud bolts don’t match, so I used nuts and other things I had on hand as spacers and managed to secure it in place.
~To be continued~
Comments